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And again: About using the shifted version of CN China together with the 006B082300.bin: Does the 006B082300.bin correct the offset in European Garmins? Does it work on Dakota 20 and Etrex 30? Where to put the 006B082300.bin? Please help!

I'm sorry flourescent, but i think that the bin file can only be used with official China firmware in some China/Taiwan devices. So you'd need to cross-flash a US/EU device if possible [inherent risks of course], and that's if i correctly understand syzygy's [Only registered and activated users can see links. ] applicable use:

As said before, only the firmware in Garmin China products can recognize these two subfiles. So even if your device is an official, say Garmin US, product you won't be able to take advantage of the features provided by these two subfiles, unless you can find a way to flash your device to Chinese firmware.

It is a myth or misunderstanding that the file '006B082300.bin' can correct the shift/offset in an official Garmin China map. In reality, the map itself is never modified, let alone corrected. The coordinates of the map are not corrected neither when they are displayed on screen or recorded in SD card.

What contained in the bin file is actually a piece of code to add shift/offset to the coordinates received from the GPS chipset before they are sent to the navigation software. The same algorithm used to shift the China map is used to shift the GPS coordinates. When the navigation software displays the shifted GPS location on the shifted map, it looks as if there was no shift to the user because the amount of shift is the same. An illusion after all. However, the recorded waypoints, routes and tracks will all have shifted coordinates which cannot be exchanged with Google Earth and other regular GPS products/software.

Similar to the two subfiles above, only the firmware/software in some Garmin China and Garmin Taiwan products can recognize this bin file and activate the shift adding (not the mythical correcting) feature. That's why most non-Garmin-China/Taiwan devices have to use shift corrected maps like Venus maps.

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Third: About using the shifted version of CN China together with the 006B082300.bin: Does the 006B082300.bin correct the offset in European Garmins? Does it work on Dakota 20 and Etrex 30? Where to put the 006B082300.bin? Please help!

this link leads me to a page where I shall choose a national page,
I did choose my country and in a second attempt I did choose the USA,
then I am led to the national (my country or USA) page about the CN China,
in both cases it is written in red letters that this map is NOT compatible with StreetPilots
and the tab "Products" leads to Garmins which should be compatible with CN China.

BUT: If I would buy some non-StreetPilot device from this list I would get one with European / US firmware!AND: Garmin never writes that devices have to be bought in China or that they have to have chinese firmware. Garmin only writes about "compatible" devices.

So at least for me my questions still are not answered by Garmin. It could be that I will travel to mainland China in the next months, then I will try to find a final answer....

The only current StreetPilot products are of course the Apps of that name for phones. The devices named StreetPilot are all long discontinued, but i think Garmin is being a bit silly in saying on some NT City Navigator map pages 'This map is not compatible with StreetPilot® devices' because that's simply not true. Some are and some aren't. Certainly 26x0 and related earlier devices are not NT capable as they can only use Garmin's [discontinued in 2009] OF maps, but 27x0 and later related models are NT capable as are SPix and SPc3x0 onwards. All Garmin's CNNT maps are produced using the same technology i.e. CNNT NA will work in an AU/EU/SAm/SAf blah blah unit which uses a local CNNT and vice versa. I have a SP2720 with LM NA for instance and i recently updated it with a portion of NA 2015.30, yet Garmin's 'blanket' disclaimer in red seemingly precludes it but then perversely includes it in the 'Compatible Devices' list:

That very same map is presently running happily in my SPc320 and SP 2720 ....

Kinda makes me wonder about the total accuracy of any of their other statements, including the one about 006B082300.bin ........

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Neil, I fully agree with you:
"Kinda makes me wonder about the total accuracy of any of their other statements"
And the SPc320 can not display NT-maps up to some firmware-version, after this version it can.

Yup, same with Honda Goldwing navi units which are a modified SP2620. OF non-NT only prior to Version 4.50 fw.

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